Barca are level on points with Real but are top because of a superior head-to-head record.

Luis Enrique's side are also ahead on goal difference, but Real will claim the title if they win each of their remaining four league matches as they have a game in hand.

Barcelona have scored 104 goals in 35 La Liga games this season

Despite dominating possession throughout, Barcelona's feted front three of Lionel Messi, Suarez and Neymar were sluggish before the break, misplacing passes and failing to register a shot on target.

The visitors were gifted the lead, however, when ex-Watford midfielder Jurado tried to curve a pass back to Lopez with the outside of his foot, contriving only to give Suarez a free run on goal.

That mistake compounded an earlier one from Jurado, who dragged an effort well wide when through on goal as the hosts split the Barcelona defence apart on five minutes, in what proved to be their best chance of the game.

Even after Suarez's opener, Espanyol held firm against their neighbours until Messi carved them apart with a surging run on 76 minutes, rolling the ball to Rakitic for a simple finish.

Espanyol left-back Aaron Martin then produced a horrid mis-kick when attempting to clear a cross, allowing Suarez to score his 26th league goal of the season.

'We are annoyed'

Espanyol boss Quique Sanchez Flores: "We are annoyed, but tomorrow we will be better.

"Football is a game of errors and has given a situation that has harmed us, but is part of the game. We are annoyed, but tomorrow we will be better."

Barcelona boss Luis Enrique: "I think we read the game well, although there are always things we can improve, and I'm satisfied with what I saw.

"If you play a first half like that, with rhythm and intensity, you tire out your opponent, that then gave us a chance in the second half to find more space.

"Even though it might seem we played much better in the second half than in the first, I was very happy with the team's performance in the first half, and I think this is a well-deserved victory."